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1 ?自然电位测井 《油气藏储集层测井评价技术》 曾文冲 石油工业出版社 1991 第一章 自然电位测井(SP log) 本章重点：主要讲解自然电位测井的基本原理、曲线形态、影响因素、地质应用。 第一节 自然电位基本原理 一、产生的原因 1.
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Therefore, a method, which determines the resistivity of formation water in flooded layers with SP log, is given in this paper. 为解决这一问题，提出了一种利用自然电位(SP)曲线直接求水淹层内地层水电阻率的方法。 - 2
Spontaneous potential (SP) of a formation has tight relationship with salinity of formation liquid, the salinity of mud filtrate in invaded zone affects SP log considerably. 自然电位与地层流体的矿化度有密切关系，侵入带中泥浆滤液的矿化度对自然电位测井有较大的影响。 - 3
The method, by means of non-linear algorithm of neural network technology, is used to set up a non-linear relation among sonic log curve, SP, Rt, Gr and curves. 该方法通过神经网络技术的非线性算法，在声波曲线与自然电位、电阻率、自然伽马等多条测井曲线之间建立一种非线性关系。
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